Ventilator



Patented pr. 8, 1924.

YcHanLnsA. MOORE, or sT. PAUL, MINNESOTA.

VENTILATOR.

y Application filed January 2.2, 1920. serial Nd. 353,267.

To all whom z't may concern:

Be it known that I, CHARLES A. MOORE, a citizen of the United States,residing at St. Paul, in the county of Ramsey and State of Minnesota,have invented a new and useful Improvement in Ventilators, of. 'whichthe following isa specification.

This invention relates to ventilators for use in refrigerators, theprimary objectbeing to provide a refrigerator in a receptacle, vehicleor fship or any other structure with a ventilator which will mosteffectively cause,

a well defined circulation of pure cold air not overladen with moisturethroughout the entire provision chamber of the structure.

' It is a well known fact that even though erator, if the air is chargedwith too much moisture, theperishable goods inthe structure are damagedand not preserved iny proper condition. It istherefore the' primaryobject of this invention to maintain the refrigerated air in thestructure in dry condition as well as cold. l

, With these and otherobjects in View, my invention comprisesthefeatures .of construction and combination of parts hereinafter describedand claimed.

In .the accompanying drawing forming part of this specification, iFig.1-is a horizontal section through a provision chamber.

taken on the linel 1-1 of Fig. 2, showing my invention applied to astationary-structure, although it will be understood that my inventioncontemplates applying my improvement to structures of any kind, whereina refrigerator is employed, and Fig. 2 is a longitudinal verticalsection taken on the line 2-2 of Fig. 1. f

In the drawing A indicates a portion of a stationary building structure,having the usual walls -10 and 11 within which is constructed aprovision chamber B having side and end insulated Walls 12, through oneof which is the` entering doorway 13.. Arranged within the provisionchamber is an overhead bunker C,- comprising baiiie walls 14 distancedfrom the walls of the provision i chamber andsecured to the insulateddrain means.

floors 15 and 16 hung from the insulated ceiling 17 by bolts 18 or anyother suitable This bunker structure `is formed with a central downdraft port 19 at the ends of which are guard elements 20 .dis-1 tancedbelow the ceiling and -permitting air to circulate over the ends of thebunker and refrigerant and down through said port. Arranged within thebunker over the drain floors are the refrigerating coils 21 and 22, but

it will be understood that my invention contemplates employing any formof bunker for Yuse eithjer with refrigerating coils or with ice. lVhenused with the coils or with ice, entrance to the bunker is had throughthe doorway 13, which is normally closed by a door 23. l

. My improved Ventilating device includes a duct D connected with the ue24 in the wall 1 0 and leading directly over and through the bunker inclose proximity to the refrigerant, thence downwardly to a point- -nearthe iioor 18l of the provision chamber. a cold temperature is producedin a refrig- A second duct E. extends downward from 4the upper portionof the. provision chamber,

,about the lading therein this air rises to the 'upper portion of thechamber. Beingthen somewhat colder than the outer atmosphere, said airwill fall to the outside through the duct E. Thev .steady down draftsthus produced in the ducts D- and E causes a .convective and diffusedfreshening circulation of air within the chamber. Suitable hand operateddampers 25 and 26 are provided respectively in the ducts D and E inconvenientposition to be turned by an .operator` standing on the iloorof the provision chamber. By' adjusting theseV dampers, the amount ofdraft and the-percentage of moisture in the air in the provision chambercan be regulated from time to time. By

regulating these dampers the dryness of the air in the provision chambercan be maintained vinr prime condition for preserving any lading in`said chamber. The entire apparatus is simple and inexpensive in con.struction, and provides an effective apparatus for accomplishing theresults above set forth.' i

The duct D is also provided with a branch 27 normally closed by stopper28. When not operatinfr under the action ofa refrigerant in the iunker,the Stoppers 28 and 30 can be removed and the dempers 25 and 26 closed,in which event the upper stratum of moist air Ain the room is removed bythe drain .29 in the vfloor of the provision chamber is provided belowthe lower end of duct D, which is ad-apted to convey the drip resultingfrom condensation by conducting moist air through duct D and to conveydrip from the refrigerant.

Having described my invention what I claim asY new and 'desire toprotect by Iletters Patent is:

1. In combination with a lading chamber having a refrigerant in theupper portionv thereof,l a down draft duct leading from' the outeratmosphere in close proximityv to said refrigerant to be cooled therebyand h'aving exit to said chamber near its-lower pory tion and asecond'down draft duct leading from the upper portion downwardly and outof said lading'V chamberpadapted to conduct air laden with acomparatively high percentage of moisture from said chamber to the'outer atmosphere.

2. A provision chamber having a refrigerant maintained intheupper'portion theref of, a fresh air ingress duct leading from theouter atmosphere into said provision chamber in close association butout of direct contact with said refrigerant to be cooled thereby andhaving exit to said chamber near its lower portion and a second ductleading from the upper portion of said provision chamber downwardly tothe outer atmosphere for conducting air laden with a high percentage ofmoisture from the provision chamber7 said ducts being provided withregulators for adjusting the volume of air passing therethrough. y

3. Inl combination with a chamber having a refrigerant in its' upperportion adapted to`be maintained or discontinued in use, a duct passingthrough'a' substantial portion of its length in near proximity to therefrigerant, said duct having an ingress-egress terminal opening in-theouter atmosphere near the upper level 4of theI chamber, a ter- Ininalegress opening within the chamber at the lower portion thereof and avalved ingress opening between said terminal openings and in thatportion of said duct'i'n the upper portion of the chamber, a damper in'said duct at a point between said valved ingress opening and egressopening, a second duct having an ingress terminal opening near the upperportion of the chamber, an ingress-egress terminal opening in the valvedingress and egress openings beingv closed when the dampers are openedand .the refrigerant maintained, whereby fresh cold air is supplied tothe lower portion of the chamber through the first duct and the warmerhumid air conveyed from the upper portion of the chamber by the secondduct, said valved ingress and egress openings being opened when thedampers are closed and the employment of the refrigerant discontinued,whereby fresh air is supplied to the lower portion of the chamberthrough said second duct and vitiated air conveyed from the upperportion of the room by said first duct.

4. The combination with a refrigerating chamber of a Ventilating,dehumidifying apparatus therefor, comprising means for introducing freshcold air to the lower portion of the chamber and means for re-l movingthe upper stratum of air downwardly from saidchamber, the air removingaction of said second means being stimulated by the effect of theincoming cold air.

5. In combination with a lading chamber having a refrigerant adaptedtobe maintained or itsl use discontinued in its upper portion, a. downdraft duct leading from the outer. atmosphere in close proximity to therefrigerant to be cooled thereby and having exit to said chamber nearits lower portion, said duct having a valved inlet entering the upperportion of said chamber and being valved on the lading chamber sidebfsaid valved inlet therein, and a second down draft duct leading from theupper portion of said chamber downwardly and out of said chamber, saidsecond duct having a valved inlet entering .the lower portion of saidchamber and being valved on the lading chamber side of said valved inlettherein, whereby provision is made for two independent circulations ofair, one providing a cooled down draft of fresh outside air entering thelower portion of the chamber and the warm vitiated air from the upperportion of the chamber er pelled downwardly to the outer atmosphere whenthe refrigerant is maintained and the other providing cool outside freshair entering the lower portion of the chamber and the warmer vitiatedair expelled upwardly to the outer atmosphere when the use of therefrigerant is discontinued.

In testimony whereof, I have signed my name to this specification.

CHARLES A. MOORE.

